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Non-Binary LDPC Codes with Large Alphabet Size
Koji Tazoe, Kenta Kasai, Kohichi Sakaniwa · 2014-01-29 · via cs.IT updates on arXiv.org

We study LDPC codes for the channel with input ${x}\in \mathbb{F}_q^m$ and output ${y}={x}+{z}\in \mathbb{F}_q^m$. The aim of this paper is to evaluate decoding performance of $q^m$-ary non-binary LDPC codes for large $m$. We give density evolution and decoding performance evaluation for regular non-binary LDPC codes and spatially-coupled (SC) codes. We show the regular codes do not achieve the capacity of the channel while SC codes do.

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